Rear sprocket removal M796

jonzi · 18-10-2015, 02:34 PM

Hello peeps

I have to get the rear sprocket off to change the disc.

When I try to undo the nut the rear wheel turns.

I have put it in gear and stuck a lump of wood between the spokes (which I wont be doing again) but the wheel still moves.

I can't hold the brake on as the caliper is off, and in bits. the seals were gone, the fluid boiled and the disc warped.

Any ideas how I can get the thing off?

slob · 18-10-2015, 03:45 PM

Quote:

Originally Posted by jonzi

... stuck a lump of wood between the spokes...

the factory method used to be a bar slotted into the paddock stand, with a handlebar grip to protect the spokes, mind you the spokes were considerably more substantial ten years ago

rollo22 · 18-10-2015, 04:04 PM

You need to use a Rattle gun

BigOz · 18-10-2015, 04:20 PM

Impact wrench would be ideal if you can borrow/hire a cordless electric one.

Wood between the chain and sprocket.

jonzi · 18-10-2015, 04:29 PM

Think I'll buy an impact wrench

Cheers all

BigOz · 18-10-2015, 06:02 PM

Decent ones are quite pricey.

rollo22 · 18-10-2015, 06:18 PM

If it's only going to be used occasionally machine mart do a 1/2 decent electric one

holty · 18-10-2015, 06:20 PM

Hi,
I watched the chaps at louigi Moto change the chain and sprockets on my 1100 single sider.
I can report that it is not as straightforward as you might think, and it is definitely not one for the home mechanic unless you have access to the correct tools. It was well worth the hour and a half labour and I know that the job has been done properly! They did replace the steel nuts for stainless at my request.

18-10-2015, 06:20 PM

Machine Mart do a cheap 'disposable' one & according to the reviews it's not bad…
https://www.machinemart.co.uk/shop/p...wrench-kit-12v

jonzi · 18-10-2015, 06:33 PM

Quote:

Originally Posted by holty

Hi,
I watched the chaps at louigi Moto change the chain and sprockets on my 1100 single sider.
I can report that it is not as straightforward as you might think, and it is definitely not one for the home mechanic unless you have access to the correct tools. It was well worth the hour and a half labour and I know that the job has been done properly! They did replace the steel nuts for stainless at my request.

The sprockets are fine. I am changing the disc. All within my capabilities. Just getting the nut off is annoying.

I have bought some 450nm electric impact gun thing from fleabay. I'm sure it'll do the trick.

If not, I can rebuild the caliper, refit and then go to Rosso to get the disc off. Rather not do that though as I have no time

18-10-2015, 02:34 PM	#1
jonzi Mary Mary Quite Contrary Join Date: Mar 2012 Location: Berkhamsted Bike: M796 Posts: 1,398	Rear sprocket removal M796 Hello peeps I have to get the rear sprocket off to change the disc. When I try to undo the nut the rear wheel turns. I have put it in gear and stuck a lump of wood between the spokes (which I wont be doing again) but the wheel still moves. I can't hold the brake on as the caliper is off, and in bits. the seals were gone, the fluid boiled and the disc warped. Any ideas how I can get the thing off? __________________ #48

18-10-2015, 04:04 PM	#3
rollo22 Moderator Join Date: Apr 2008 Location: Moreton-in-Marsh Bike: M1100evo Posts: 1,082	You need to use a Rattle gun __________________ IF ALL ELSE FAILS READ THE INSTRUCTIONS

18-10-2015, 04:20 PM	#4
BigOz Registered User Join Date: Feb 2009 Location: Chatham Bike: Multiple Monsters Posts: 714	Impact wrench would be ideal if you can borrow/hire a cordless electric one. Wood between the chain and sprocket. __________________ Sideways is the new forward!

18-10-2015, 04:29 PM	#5
jonzi Mary Mary Quite Contrary Join Date: Mar 2012 Location: Berkhamsted Bike: M796 Posts: 1,398	Think I'll buy an impact wrench Cheers all __________________ #48

18-10-2015, 06:02 PM	#6
BigOz Registered User Join Date: Feb 2009 Location: Chatham Bike: Multiple Monsters Posts: 714	Decent ones are quite pricey. __________________ Sideways is the new forward!

18-10-2015, 06:18 PM	#7
rollo22 Moderator Join Date: Apr 2008 Location: Moreton-in-Marsh Bike: M1100evo Posts: 1,082	If it's only going to be used occasionally machine mart do a 1/2 decent electric one __________________ IF ALL ELSE FAILS READ THE INSTRUCTIONS

18-10-2015, 06:20 PM	#8
holty Registered User Join Date: Jun 2010 Location: Glastonbury Bike: M1100 Posts: 96	Hi, I watched the chaps at louigi Moto change the chain and sprockets on my 1100 single sider. I can report that it is not as straightforward as you might think, and it is definitely not one for the home mechanic unless you have access to the correct tools. It was well worth the hour and a half labour and I know that the job has been done properly! They did replace the steel nuts for stainless at my request.

18-10-2015, 06:20 PM	#9
Greyman Guest Posts: n/a	Machine Mart do a cheap 'disposable' one & according to the reviews it's not bad… https://www.machinemart.co.uk/shop/p...wrench-kit-12v